*{
    padding: 0;
    margin:0;
}

.box{
    width: 800px;
    height: 800px;
    background: black;
    margin:20px auto;
    padding-top: 20px;
}

@keyframes hueRotate{
    0%{
        filter: contrast(15) hue-rotate(0);
    }
    100%{
        filter: contrast(15) hue-rotate(360deg);
    }
}

.number {
    color: white;
    width: 200px;
    height: 200px;
    text-align: center;
    line-height: 200px;
    position: relative;
    top:31%;
    left:50%;
    margin-left: -100px;
    z-index:9;
    font-size: 40px;

}

.contrast{
    width: 100%;
    height:100%;
    background: black;
    position: relative;
    filter : contrast(15);
    animation: hueRotate 3s linear infinite ;
}

.circle{
    width : 300px;
    height: 300px;
    background: #000;
    position: absolute;
    left:  50%;
    top:0;
    margin-left: -150px;
    filter : contrast(15);
    filter:blur(8px);
    animation:circleRotate 5s linear infinite;
    border-radius: 50%;
}

.circle::before{
    content :"";
    width : 200px;
    height: 200px;
    background:#00ff6f;
    position: absolute;
    top:50%;
    left:50%;
    transform: translate(-50%,-50%);
    border-radius: 42% 38% 62% 49%/45%; 
}

.circle::after{
    content :"";
    width : 176px;
    height: 177px;
    background:black;
    position: absolute;
    top:50%;
    left:50%;
    transform: translate(-50%,-50%);
    border-radius: 50%;
     
}

@keyframes circleRotate{
    0%{
        transform: rotate(0);
    }
    100%{
        transform: rotate(360deg);
    }
}

.bubble-home{
    width:150px;
    height: 50px;
    background: #00ff6f;
    position: absolute;
    bottom : 0;
    left:50%;
    margin-left: -75px;
    border-radius: 150px 150px 0 0;
    filter:blur(8px);
}

.bubble{
    width :20px;
    height: 20px;
    background:#00ff6f;
    border-radius: 100%;
    position:absolute;
    bottom:0;
    left:50%;
    transform: translate(-50%,0);
    z-index: 100;
    animation: bubbleMoveUp 5s ease-in-out infinite;
    fill: blur(5px);
}

.bubble:nth-child(2){
    width: 18px;
    height: 20px;
    animation-duration: 3s;
    animation-delay:1s ;
}

.bubble:nth-child(3){
    width: 23px;
    height: 17px;
    animation-duration: 5s;
    animation-delay:0 ;
}

.bubble:nth-child(4){
    width: 22px;
    height: 16px;
    animation-duration: 1s;
    animation-delay:0s ;
  
}

.bubble:nth-child(5){
    width: 15px;
    height: 20px;
    animation-duration: 1s;
    animation-delay:3s ;
}

.bubble:nth-child(6){
    width: 16px;
    height: 20px;
    animation-duration: 4s;
    animation-delay:0s ;
}

.bubble:nth-child(7){
    width: 25px;
    height: 18px;
    animation-duration: 3s;
    animation-delay:0 ;
}
.bubble:nth-child(8){
    width: 25px;
    height: 18px;
    animation-duration: 3s;
    animation-delay:9s;
    
}
@keyframes bubbleMoveUp{
    0%{
        bottom: 0;    
    }
    100%{
        bottom:calc(100% - 260px)
    }
}